To come up with a complete non-sequitor in a conversation. The entymology of this word began on The Geek Show Podcast when panelist Leigh George Kade would be accused of completely derailing conversations with completely irrelevant information. One day, when he wasn't there, a fellow panelist decided to "fill in" for him and shouted "Blueberries!" for no reason.

It's caught on with the audience of the show and is a recurring declaration when an irrelevant, derailing comment is made.

The most wonderful form of marijuana to date. The bud has a beautiful blue hue to it rather than the usual green. It also gives off the smell of complete blueberries, hence the name. Although it is not the most powerful, it will still knock you on your ass.

-Yo Mario, you sure this shit is real weed? It don't smell or look like it.
--Yea man, this shit is blueberry.

-THE BEST GANJA!
-Smells of fruit (i dont know the smell of an actual blueberry)
-Tastes like weed with a little bit of blueberry taste
-Better High than regular weed
-Not as hard of a burnout as regular weed

derogitory gaming term for sombody on your team in Battlefield 3 who sucks, is not helpful and is not in your squad. Those in your squad have green icons over their head while others on your team have blue icons over their head.

"Damn blueberry won't give me ammo"
"tell the admin to kick the smurf he just keeps C4-ing the helicoptors!"

1) Certain plants related to heathers and azaleas, or their small dark fruit.
2) In the drug subculture, potent cannabis with a bluish tinge.
3) In "World of Warcraft," either a voidwalker demon (originally) or a draenei.

1) Blueberries grow in the mountains.
2) My roommate was smoking blueberry and gave me a contact high.
3) I told the warlock to let the blueberry tank, and the shaman thought that I was talking about him!